Door-locking mechanism



C. l. WALKER/ DOOR LOCKING MECHANISM. APPLICATION FILED mmao. 192'2.

Paiented Dec. 12, 1922.

1,438,730. Fig! C B Max k tobfrail l2. 'lhelovver eow to dooi ,qgiiided by af iysuitable means as 3 new,

.onannns i. WALKER, or nos enemies, oamsoanml noon-Loonrnef MnoHnnIsi/i.

Applica'tion filed January to, 1922. serial No. 532,928.

To all whom itmag ooncem:

Be it known that 1, CHARLES I. WALKER, a 'CltIZG-D OlTtlIQ' United States, residing at Los Angeles, in the county of Los Angeles'and Stateof California, have invented acertainw new and useful Improvement in Door-Lookin h lechanism', of which the following is a full, clear, concise, and exact description, cfei'ence being had to the accompanying drawings,- cation. i

This invention relates to ii'npl'ovements in door locking mechanism.

One object of the invention is to provide an easily operated,economical"and efficient locking mechanism for doors, especially car side doors. i f

More specifically, the object ofmy invention is to provide a locking mechanism adaptedto be located-atone edge of the door and so arranged that, in loeked positionof the parts, one of the elements of the locking mechanism serves as an effective abutment or stop toprevent slidingjmovement of the door. v r Other olqects of the JIIVGIltlOlfWlll inore clearly appear froni thd descriptionand chiimshei'elnafter following.

In the drawing forming a part of this specification, Figure'l 18 a side elevational view of a portion of a box car showing my improvements apphed thereto. Figure 2 is a vertical sectional viewcorresponding sub stanti ally to the section line 2-2 of Figure 1. l igiire 3 to the broken section line 3-? oil-figure l 1 and showing the parts in locked. condition} l igl'irct is a view'siinila r t'o'liignre 3 but; its when in unlocked condition.' In Figured; also one is a sectional view corresponding illnsti'a,tii1 "the iosition of the a of the lockingmembers slimvn in dotted position to better illustrate the inter-engaging the several par liflsaid d aWi11g, the (1e 7 1 car is indicated at Z10, the same having; the iisual side dooropening adapter'itobe closed by :2 horizontally slidable am; 11. supported by suitable roller rackets l3- -l.3. It is customary-in cars of thischai' actor, to engage the front or forward edge of the doorbeneath a strip as indicated at 1.4 so that the front or forward edgeof the door cannot bepried open.

forming i a part of this .SPGClfh l the member B, iscurved one dicate'dat 22, said s'u'i i; to the portion of a cyi,

an s of which coincides With theai-zis ofthe manner o f,

= iii 1 ii in m.

- The Wall on the sideof the the door, whenfthe latter in closed posi-" tion,is cut away aslindic'atedat #3 tea point e on level with or below the bolt C as 0 allow the latter to enter the member 13, as

"which is i adjacent end of the bolt C.

In carrying out my invention, I prefer ably employ the locking mechanism on the rearve rtical edge of-the dooiyas shown best in Figure, 1. Said locking mechanism, shown, comprises, broadly, a housing A; a locking member 1:3 pivoted Within the hous ing-A; a bolt C; and a combined attaching I and cam bracket D secured. to the door.@ The housing A is preferably countersunk into the side WilllOf the car adjacent the door and isvertically elongated and of appreci able depth so as to receive completely therei in, the-p voted locking member B When the [latter IS in noperative position and as shown by the dotted lines in FigureQ.

tached to the housinggli near the top of the latter as indicated a t-1.6. Said member B has a flat face 17 extending approximately radially from thep n 18,-anlouter end face 18 perpendicular to theface'll, a bottom face Figure '2. /Viththis construction, it is e'vident that the "member is adapted to fall under the influence ofgravity to a position Wholly Within the housing A Figure 2.; 1

tn its top side, assuming itfin horizon 1'ecess21 of substantially.rectangular oiitline as shown injl igure 3. The surface defining t 1e edge of said recess nearestthe end of "niiderclit'as iin '1'] siiriiacc, the

bolt (1, for the purpose hereina titer described.

The locking member B s preferably, infthe forin'of a castmgor, forging of suitable: substantial construction and is pivotal'ly atas shown in I .51 acent 65 post or jamb'15, the outer face of the housing 1 being flush with the carside Wall. Said 2 housing A is secured in place by any suitable ineans,as for instance the screws shown, i

lhpaiallel with the face 17, and "an inclined face 20 lead ng fi'om'theface 19 to a'point ad acent thepivot pin 16, as best shown in 'Dosition, theniemberf'B is provided with a,

J coiresponding hereinafter described. The Wall onthe' oo- "posite side of the recess "21 is providedwitli i i an openingfl therethroiigh adapted to be 1 alined with and of the, size receive the shown by dotted lines in Figure. l, the bolt The bolt'G is or circular cross section and more orless 1n the torm of arod .011 bar adapted for both rotativeiand longitudinal movement. Near the end adjacent the lock- 111g member B, the bolt C is provided with a radiall 1 extended lu 25 of a width correspending approximately to the width otthe recess .21 and ofa slightly shorter radius than the radius of thecurved surfaceu22.

Beyond the lug 25, the end portion 26 of the bolt is of suchjlength that. when the bolt is in the positionshown; in Figure 1, the end 26 will lie close to and opposite the opening 24. in the member 15' and whenrthe bolt is rotated through anarc of 180, as hereinr after explained, said vend 26 will enter the opening 24 and'preferably pass slightly beyond.. H

The bolt'C is rotatably'mounted in suitable bearings provided; in the bearing casting D which is secured to thedoor 11. adja cent its rear edge as shown in Figure 1;

Rotation of the boltis efi'ected by means of a lever;v handle 27 extending radial-1y there- .fromfthe latterworking within a cam groove 28,1tormed inthe casting 11 The top portion of the cam groove 28, as shown in Figures 3 and a, is extended downwardly and toward the rear edge ofthe door through an erect approxi r' ately 90 and below this point is slightly offset in the opposite direction.

With this arrangement, whenthelever handle 27 1s m '1ts'uppermost vert cal position as G will'bein itsextremefposition toward the left and as shown'in Figures V7 hen themember B is elevated to its horizontal position which corresponds tothe dotted line, position showninFigure 4; the end 26 of the bolt will be opposite the opening 24; and

upon swinging ,theylever' handle 27 down- W'ardly, the bolt 6; will not: only be rotated but will'be snnultaneously advanced long1-.

tu'dinally so as to engage. the end26-within the opening 24 and also swing the lug-"2 within the recess 2lfand untilth-e lug 25 1s in a depending vertical position as shown in Figures 1,, 2; and 3. During the last portion of the downward movement of the lever handle 27, there will be a slightbackward shitting of the bolt C, thus pulling the member B tightly against the rearedpgeof the door and securely locking thedoor against movement in an opening direction. Thewmember B will of course be held up in its operat ve positionby reason. 01 the end 2640f the bolt extended through the opening 25 f .The lower endiofi the, lever handle 27 is preferably slotted so as to fitover a staple 29 in the manner of ahasp, the extended end of the staple 29being adapted to; receive the usual lead seal employed ;on 1 rail-road cars-i With my arrangement. it will be. seen that the niember B When/in locked position,

'. serves as a substantialiabiltmentfor therear edge of the door to prevent its opening movements and :lurthermore when the parts are in locked position, the rearedge of the door cannot be sprung outwardly thereby minimizing danger of theft which is a more or less common occurrence from railroad box cars, the thieves frequently prying outwardly the lowerrearcorner portion of the door to enter the car without breaking the lead seal which is usually employed with a locking mechanism onthe forward or front edge of the .door..

' Ihaveherem shown and described .what I now consider the preferred manner of carrying out the inventionybut' the same is sition, said member being movable from a position out of theplane of the door to a positlon opposite sald edge andi vice versa;

of a bolt carried by the doorarranged to project" over said edge thereof anduprovided with a projecting lug, saidimember having a shouldered recess; to receive said lug; and means for'rotatin'g said bolt to engagesaid projection within said recess to thereby retain the latter opposite said edgeof the door.

2., In a locking mechanism fora doolfslidable on a wall, the combination witha mem ber mounted onthe wal l ad acentone, edge I of the door when the latter is iii-closed position, said member being movable frorna positionoutof the'plane of the doorto a posit on opposite saidedge and vice've'rsag of a bolt carried by thedoor adjacent said edge thereof; said membenhaving anqopening therein adapted to begalinedfwith the ad jacent end of the bolt; andoneans for: shifting-r; said bolt endwisetoward said. member toenter said end opening." i 1 In a lockingmechanism for a door slidable on a wall,-thecombination with a member mounted on the wall adjacent, one edge of the bolt within said.

01 the door vhen the latter is in closed. positioin said member being movable romancsitioi'iout of the-plane of the door; tea position opposite said edge andwice verse; of abolt carried by said door adjacent said edge and provided with a radially extending lug, said'member'having'an opening adapt-.. edzto be alined with the adjacent. end of the bolt and arecess to receivesaid lug;; and

means for rotatingsaid b'olt to engage; said bolt'lugwithin said recess andshift thebolt enclwise toward said member to enter the end of the bolt within said opening;

,4; In alockingmechanism for a. door slidable on a wall, the combination wit/ha meme bor mounted on the wall adjacent one edge oil the door when the latter in closed position, said member being ,movable" froma position out of the plane of the door to a position opposite said edge and vice versa; of a bolt carried by said door ad acent 831d able on a wall, the combination with a mein bei' mounted on the wall adjacent one edge of the door when the latter is in closed position, said member being movable from a position out 01'. the plane oi" the door to a position opposite said edge and vice versa; of a bolt carried by said door adjacent said edge and provided with a radially extending lug,. said member having an opening adaptedtobe alined with the adjacent end of the bolt and a recess to receive said lug; and means for rotating said bolt to engage said bolt lug within said I'GOGSSELHCl shift the bolt endwisef toward said member to enter the end of the bolt within said opening, said means comprising a lever on the bolt and a cam with which said lever cooperates.

6. in a locking mechanism tor a slldable car side door, the combination with. a member pivotally mounted on the car side a djacent one edge of the door when the latter in closed position, said member being movable from a position out of the plane of the door to a position extending across said edge and vice versa; of a bolt carried by the door arranged to project beyond said edge said bolt being provided. with a radially extended lug and said member having a recess therein to accommodate said lug; and means for rotating said bolt to engage said lug within said recess.

7. In a locking mechanism for slidable car doors, the combination with a locking member pivotally supported on the car wall adjacent the rear edge of the door when the latter is in closed position, said member being osc llatable in a plane perpendicular to the car vall and adapted to fall to inoperative position, clear of the door; un

der the influence of gravity; and means carried by the door adjacent said edge adapted to cooperate and interlock with said pivoted member.

8. In a locking mechanism for slidable car side doors, the combination with a housing mounted flush with the car side Wall adjacent the rear edge of the door when the latter is 111 closed position; of a gravity locking member pivoted within said housing adapted to be swung in a plane perpendicular to the wall to a position extending across the rear edgeot the door, said member having an opening therein extending horizontally and adapted to be alined with the adjacent end of a cooperable bolt; a bolt car:

ried by said door adjacent the rear edge thereof; and means for sliding said bolt endwise toward said member to enter the adjacontend oi the bolt within said opening.

.9. In alocking mechanism for slidable car side doors, the combination with a housing countersunk flush within the side wall of the car adjacent the rear edge of the door when the latter is in closed position; o'ta pivotally mounted locking member within said housing adapted to fall, under the influence of gravity,

7 to an inoperative position clear of the path of movement of the door, said member having a recess therein and a horizontally extending opening; of a bolt mounted on said door near the rear edge thereof, said bolt having a radially extend edlug near the end adjacent said member; and means for simultaneously rotating said bolt and shifting same longitudinally toward said member to thereby engage said lug and enter the end of the within. said recess bolt within said opening. i

In witness that I claim the foregoing l have hereunto"subscribed my name this 11 day of January 1922.

CHARLES I. WALKER.

lllitnesses C. W. BIsH, C. E. FISH. 

